445394660 has 24 divisors (see below), whose sum is σ = 944414016. Its totient is φ = 176427360.

The previous prime is 445394659. The next prime is 445394687. The reversal of 445394660 is 66493544.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106046 + ... + 110165.

It is an arithmetic number, because the mean of its divisors is an integer number (39350584).

Almost surely, 2^445394660 is an apocalyptic number.

It is an amenable number.

445394660 is an abundant number, since it is smaller than the sum of its proper divisors (499019356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445394660 is a wasteful number, since it uses less digits than its factorization.

445394660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216323 (or 216321 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 445394660 is about 21104.3753757367. The cubic root of 445394660 is about 763.6863038785.

The spelling of 445394660 in words is "four hundred forty-five million, three hundred ninety-four thousand, six hundred sixty".